TireJECT is a Durable, Long Lasting, Instant Tire Repair + Flat Tire Prevention, made with High-strength Aramid Fibers and Recycled Rubber Tire Particles utilizing FAStec Liquid Rubber Technology. Instantly repair bead leaks and tread punctures up to 3/8 in. in the center tread. Tire shop friendly, no mess during tire replacement. Safe for tire and rim, will not cause wheel or vehicle vibrations.